Analysis and engineering notes on AI data center infrastructure — power, cooling, racks and the build-out of compute capacity worldwide.
Primary-loop valves are derived from three upstream decisions: loop architecture, whether each CDU branch modulates or is flow-limited, and fail direction. Worked 2 MW example with Cv, valve authority, surge, bypass and relief arithmetic.
Read article →VEWFD control logic for data centers: the four ASD thresholds, confirmation features and what each costs in seconds, the cause-and-effect matrix, and the time budget they consume.
Read article →A DCIM point schedule that survives commissioning: which measurement model, where each point sits, what class and cadence it needs, and why the IT meter's location sets your PUE.
Read article →How compute centers handle pipe scaling: diagnose with three signals, match solvent to mineral, choose the treatment level, and pass four acceptance gates.
Read article →A DCIM backup standard: four data classes with per-class RPO/RTO, a four-copy topology, the 3-hour gap behind a 5-minute restore, and the drill that proves it.
Read article →A role-by-role map of US data center pay in 2026, built from published employer bands rather than survey averages, plus the coverage math that turns salaries into a per-megawatt staffing budget.
Read article →A workload-by-workload conversion of AI services into gross revenue per GPU-hour: LLM inference, image, video, speech, embeddings and fine-tuning, with the cost floor, billable ratio and portfolio math that decide which mix actually pays.
Read article →A five-step method for sizing standby generators and on-site diesel for AI halls: load basis, fleet configuration, engine-curve burn rate, autonomy hours and usable tank volume, with a worked 10 MW example.
Read article →Training halls draw a sawtooth around a high floor; inference halls flicker between idle and near-peak under a diurnal envelope. This piece works through what servers in inference-oriented and large-model compute centers actually draw - static vs dynamic po...
Read article →Three subtractions on the supply side and one heat balance on the return: how to derive facility chilled-water supply and return targets from server coolant limits, and which ASHRAE water class you are actually building to.
Read article →A pressure selection reference for direct-to-chip liquid cooling: the three pressure numbers on every datasheet, the four layers of pressure a running loop actually sees, which class each interface allows, what a 1.5x proof test cannot see, and the checklis...
Read article →A measurement-based audit for prefab container modules: risk assessment and LPS class, the steel shell as natural air terminal, bonding in milliohms, SPD staging in a 12 m box, and the earth test that actually decides the verdict.
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